不同产量水平绿豆品种冠层温度分异现象及其光合性能  

Performance of Canopy Temperature and Photosynthesis in Yield-differentiated Mung Bean

作　　者：李云[1] 高小丽[1] 马淑蓉[1] 冯佰利[1] 高金锋[1] 王鹏科[1] 

机构地区：[1]西北农林科技大学农学院,陕西杨凌712100

出　　处：《西北农业学报》2013年第4期79-82,共4页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：农业部公益性行业(农业)科研专项(200903007)

摘　　要：为了解不同基因型绿豆群体的冠层温度分异现象及其光合性能,以不同产量水平绿豆品种为材料,在开花结荚期利用红外测温仪对绿豆冠层温度进行观测,并定期测定主茎开花节位叶片的光合性能。结果表明,参试绿豆品种在开花结荚期间存在冠层温度分异现象,低产品种"汾绿2号"、"洮9947-6"的冠层温度持续偏高,高产品种"冀绿9802-19-2"和"潍绿2116"冠层温度持续偏低,且高产品种主茎开花节位叶片净光合速率、蒸腾速率、气孔导度以及胞间CO2摩尔分数等光合生理指标均优于低产品种。In order to explore canopy temperature characteristics of different mung bean genotypes,the canopy temperature was measured with infrared radiation thermometer at flowering and pod-set stage and photosynthetic indexes of leaf grown at the flowering nodes of main stem were detected with LI- 6400 portable photosynthetic instrument. The result showed that the canopy temperature of mung bean differentiated genotypes markedly. The canopy temperature was constantly higher in low-yielded varieties,＂Fenli3 2＂ and ＂Tao 9947-6＂, and were constantly lower in the high-yielded varieties, ＂Jilti 9802-19-2＂ and ＂Weilii 2116＂. The biological indicators, including the net photosynthetic rate （Pn）, transpiration rate （Tr）, stomatal conductance （Gs） and intercellular CO2 concentration （Ci）, exhibi- ted higher in high-yielded varieties than in low-yielded varieties.

关 键 词：绿豆 冠层温度 光合性能 

分 类 号：S522[农业科学—作物学]